Note 1 - Organization and Significant Accounting Policies (Details Textual)	3 Months Ended
Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)
Number of Operating Segments	2
Number of Reportable Segments	2
Gain (Loss) on Derivative Instruments Held for Trading Purposes, Net	$ (1,368,795)	$ 1,171,006
Computer Equipment [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years
Office Furniture and Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	8 years
Office Furniture and Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	20 years
Building and Building Improvements [Member]
Property, Plant and Equipment, Useful Life (Year)	30 years
Treasury Note Future [Member]
Gain (Loss) on Derivative Instruments Held for Trading Purposes, Net	$ (1,400,000)	$ 1,200,000

Aggregate net gain and losses (whether realized or unrealized) on all derivative instruments held for trading purposes whether or not settled physically.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4CC
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4CC

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+ References

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-Topic 280
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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